writes "Canadian carriers Bell Aliant, Bell Canada, MTS Allstream, Rogers, SaskTel, Shaw, TELUS, and Videotron have all opted in to a blacklist, dubbed Project Cleanfeed Canada, provided by Cybertip.ca, the Canadian tip-line against child exploitation. The idea of having a national blacklist sends shivers down my spine. I'm a pessimist, I believe that any form of censorship will eventually be abused despite it's good intentions."
Besides engtech's post on the subject, Dr. Michael Geist has some considered comments
about this issue. From that post: "Critics are quick to draw parallels to Internet censorship in countries such as China. However, those countries involve state-based content blocking, with no transparency or legal recourse. In fact, several democracies — most notably Australia — have established limited blocking rules, while British Telecom, the UK's largest ISP, voluntarily blocks child pornography as part of its CleanFeed program. Even with various legal safeguards, many Canadians would undoubtedly find the blocking of any content distasteful. Yet to do nothing is to leave in place an equally unpalatable outcome that silences those would speak out against unlawful hate speech for fear of personal harm."